﻿// ----------------------------------------------------------------------------------
// Microsoft Developer & Platform Evangelism
// 
// Copyright (c) Microsoft Corporation. All rights reserved.
// 
// THIS CODE AND INFORMATION ARE PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, 
// EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES 
// OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR PURPOSE.
// ----------------------------------------------------------------------------------
// The example companies, organizations, products, domain names,
// e-mail addresses, logos, people, places, and events depicted
// herein are fictitious.  No association with any real company,
// organization, product, domain name, email address, logo, person,
// places, or events is intended or should be inferred.
// ----------------------------------------------------------------------------------

namespace Microsoft.Samples.BabelCam.Web.Helpers
{
    using System;
    using System.Linq;
    using System.Web;
    using Microsoft.IdentityModel.Claims;

    public class AnonymousClaimAuthorizationManager : ClaimsAuthenticationManager
    {
        public override IClaimsPrincipal Authenticate(string resourceName, IClaimsPrincipal incomingPrincipal)
        {
            var identity = incomingPrincipal.Identity as IClaimsIdentity;
            if ((identity != null) && !identity.Claims.Any(c => c.ClaimType.Equals(ClaimTypes.NameIdentifier, StringComparison.OrdinalIgnoreCase)))
            {
                var anonymousUserId = HttpContext.Current.Request.Headers["AnonymousUserId"];
                if (!string.IsNullOrWhiteSpace(anonymousUserId))
                {
                    identity.Claims.Add(new Claim(ClaimTypes.NameIdentifier, anonymousUserId));
                }
            }

            return base.Authenticate(resourceName, incomingPrincipal);
        }
    }
}